chore: remove unnecessary set_option lines

[mathlib-nolints]

I removed 767 unnecessary set_option line(s) across 308 file(s).

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workflow run for this PR

[github-actions]

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PR summary 425c4949b1

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

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Declarations diff

No declarations were harmed in the making of this PR! 🐙

You can run this locally as follows

## summary with just the declaration names:
./scripts/pr_summary/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/pr_summary/declarations_diff.sh long <optional_commit>

The doc-module for scripts/pr_summary/declarations_diff.sh contains some details about this script.

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Decrease in tech debt: (relative, absolute) = (767.00, 0.10)

Current number	Change	Type
7636	-767	backward.isDefEq

Current commit bdfc9f3a7a
Reference commit 425c4949b1

You can run this locally as

./scripts/reporting/technical-debt-metrics.sh pr_summary

• The relative value is the weighted sum of the differences with weight given by the inverse of the current value of the statistic.
• The absolute value is the relative value divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).